java - 无法访问 org.springframework.web.WebApplicationInitializer

Question

我目前正在研究使用 Spring 4、Java 1.8 和 Gradle (https://spring.io/guides/gs/scheduling-tasks/) 安排任务的示例。

但是，当运行这个例子时，我收到以下错误:

Error:(11, 8) java: cannot access org.springframework.web.WebApplicationInitializer class file for org.springframework.web.WebApplicationInitializer not found

我的Application.java的源代码如下:

package hello;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.scheduling.annotation.EnableScheduling;

@SpringBootApplication
@EnableScheduling
public class Application extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(Application.class);
    }

    public static void main(String[] args) throws Exception {
        SpringApplication.run(Application.class);
    }
}

我的gradle文件:

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:1.4.2.RELEASE")
    }
}

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'idea'
apply plugin: 'org.springframework.boot'
apply plugin: 'war'

jar {
    baseName = 'gs-scheduling-tasks'
    version =  '0.1.0'
}

repositories {
    mavenCentral()
}

sourceCompatibility = 1.8
targetCompatibility = 1.8

dependencies {
    compile("org.springframework.boot:spring-boot-starter")
    testCompile("org.springframework.boot:spring-boot-starter-test")
    providedRuntime 'org.springframework.boot:spring-boot-starter-tomcat'
}

为什么指南中甚至没有提到 org.springframework.web.WebApplicationInitializer 会导致此错误？

谢谢。

Answer 1

添加这个依赖来解决这个问题。我完美地为我工作。

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>